FerroFluid and AC Magnet
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@RokkerBoyy well now i am one of those science dudes making that cool stuff an i know why!!!!:)
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@donstratton can make it, but it isnt recommended since it is known to stain... pretty much everything
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@emb11103 yes, thats kind of what we nerds and geeks do :P
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@iNick3 The definition doesnt state that they must be small enough, "small enough" is able to still be larger than the definition, it is actually defined as particles of ~10nm
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i have no idea what any of u science dudes are saying all im saying is its freaking cool
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and the 10 nanometer molecule that binds them together so the magnetite doesn't just go towards the magnet and the oil stay
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its basically just iron filings in a fluid suspension being acted on by an alternating magnetic current, cool and strangely wonderful but not terribly complicated
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Ferrofluid is not "nanotechnology" per se. For one thing, ferrofluids have been around thousands of years before the buzzword "nanotechnology". For another, it is just extremely particles of metal in a fluidic suspension... any high school student can make the stuff on a kitchen table.
Cool stuff, yes, but not "nanotechnology" the way the media or pop culture uses it these days. NanoSCALE, perhaps, but even that may be overstating it.
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Actually ferrofluids are usually magnetite particles in a liquid medium such as oil. Iron filings would be too large to be suspended by Brownian motion and would sink. The definition of a ferrofluid includes that the magnetic particles must be small enough to be suspended by Brownian motions. What you described would be a magnetorheological fluid
iNick3 3 years ago 8
I dont get it.
xXxmidgexXx 4 years ago 3